Multiple-float speed boat



' Sept. 3, 1929. M. GREEN MULTIPLE FLOAT SPEED BOAT Filed Nov. 13, 1928 INVENTOR. /%/7r z reefl, BY

4 TTORNEYS.

Patented Sept. 3, 1929.

UNITED STATES MONROE GREEN, OF BROOKLYN, NEW YORK.

MULTIPLE-FLOAT srnnn BOAT;

Application filed November 13, 1928. 7 Serial No. 319,102.

This invention relates to water-craft and the improvements are directed to a novel form of speed-boat wherein rolling and pitching of the same are reduced to a nummum.

The principal object of the invention resides in the production of 'a craft of the above-mentioned character having a some what elongated body portion, preferably formed of rails, and provided with acplurality of floats to maintain the same buoyant and to assure a planing or riding-over the tops of high waves.

Another object is to provide a fabricated rigid metal member of resistance suflioient to support any superstructure desired, and attached thereto, said fabricated member being disposed vertically, and covered with a suitable textile waterproof covering for the protection and preservation of the same; and thus assuring that the vessel equipped in accordance with the foregoing may be immune against undue rolling and pitching.

Another object of the invention is to provide a craft of the above-mentioned character which embodies a plurality of floats, positioned at the bow and stern, and intermediate these points, .aid floats also serving as means for storage of supplies, the carrying of passengers and a closure for operating machinery.

Another object is to provide a craft of light construction and minimum tonnage, yet of superior stability, and adapted for a greater speed than the known speeds of the present time, and of less frictional resistance of its contact with the water through which the craft will navigate, allby reason of its lightness and lesser tonnage, which does not require that the craft displace any undue amountof water. i

A still further object is the provision of a boat in which economy of operation, maneuvering ability, stability and speed are combined to a very high degree, said boat being simple and durable in construction, inexpcnsivein manufacture, and extremely seaworthy.

With these objects in view, together with others which will appear as the description proceeds, the invention resides in the novel formation, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings, and particularly pointed out in the claims.

In said drawings:

Fig. 1 is a side elevation of the craft, certain portions being broken away to illustrate interior arrangements.

Fig. 2 is a plan view of the floats and their connecting means; and

Fig. 3 is a plan view of the details of construction of the float connectors or rails.

Referring now more in particular to the accompanying drawings, wherein like charact-ers of reference denote similar parts throughout the several views,..let 5 indicate a rail or connector of the required length, the extreme endsof which support floats 6 and 7, forming thebow and stern of the craft. Said floats may be secured to said rail 5 by means of suitable fasteners 8 in any well-known manner, and as will be obvious the buoyancy of said floats is suflicient to maintain said rail in a floating condition.

Intermediate said floats 6 and 7, I provide a third float 9, suitably secured to said rail, as indicated at 10, said float serving substantially as the hull proper and designed to contain the cabins for the passengerssupplies, machinery for operating the craft and instruments of navigation.

Manifestly the provision of this third float materially increases the buoyancy of the craft'and assures the desired planing acting when underway. Further, a crestriding effect is secured, as regards waves, and the danger of pitching and rolling is reduced to a minimum.

The strength of the craftsis materially increased by the positioning of a second rail 11 directly below said rail 5, and as shown in Fig. 1, this rail 11 extends downwardly from both ends of said rail 5 and is at its lowest point substantially centrally of the craft, as indicated at 12, suitable bracing 13 being provided to assure a rigid structure. Said rail 11 when braced to rail 5 constitutes the same as a very firm and substantial member of a craft of the nature shown, and

it is obvious that the craft may rest its either end upon the crest of two waves, or may rest centrally upon the apex of a single wave, and that, in either position said rail, in View of the weightless superstructure, supported thereby, will be of suflicient rigidity to pre vent buckling, or the like.

From the foregoing it is apparent that the rail 5, the rail 11 and bracing 13 form the framework of the boat, the floats 6 and 7 being attached to the ends of said rail 5, as

aforesaid, and the addition of float 9, substantially centrally of said rail 5, maintains said framework in an erect condition under normal circumstances.

As shown in Fig. 1, the. framework just described is covered by properly prepared fabric 14, which conceals the structural details of said framework and further reduces skin friction during the passage of the boat. Obviously, each of the floats 6 and 7 may be used for storage spaces, access being had thereto, and to the central float 9 by means of batches, generally designated by the numeral 15. The construction'and material used in fabricating each of the floats may depend upon conditions, but I prefer to construct the same from hard steel to withstand the pressure of high speed.

Upon inspection of Fig. 1, it will be observed that I have provided a superstructure 16, positioned above said float 9 and connected thereto by means of a vertical tubular member 17. Said superstructure 16 may serve as an additional retreat for the passengers 1n the event of heavy seas and also as a look-out and storage space for instruments of navigation.

From the foregoing it is apparent that the addition of a second rail 11, materially increases the strength of the craft and further strengthens the steel body for the proper support of the floats and hull as well as stabilizing the bodies from rolling to sides and keeps the tubular member 17 and superstructure 16 in a state of equilibrium.

Floats 6 and 7, forming the bow and stern of the craft prevent pitching when the seas are head-on, and also swerving side-play during the action of a following sea.

It should be understood that I do not 1ntend to limit myself to the number of floats shown in the drawings, since in cases where an extremely long rail 11 is adopted, auxiliary floats may be attached to said rail, so that in the event of injury to a float, there will be suflicient floats to sustain the craft upon the surface of the water.

Obviously, my system of floats may be used in any suitable number for many other purposes, as pontoons for hydroplanes and for supporting means for zeppelins, in case of accident when over the high seas.

While'the present is a disclosure of the preferred embodiment of the invention, it is to be understood that the same is not limited thereto, as various changes in the minor details of construction, proportion and arrangement of parts may be resorted to without departing from the spirit of the invention as defined in the appended claims.

I claim:

1. A boat comprising a pair of fixed floats arranged at the ends thereof, a rail connecting said floats and a closure arranged intermediate of said rail and adapted to serve as a housing for passengers.

2. A boat comprising a pair of fixed floats forming the bow and stern thereof, a rail coi inecting: said floats, a float arranged intermediate of said rail and adapted to serve as iousing for passengers and a second rail positioned below the first-named rail and within its vertical plane, and adapted to strengthen and support the craft.

A boat comprising a pair of floats formthe bow and stern thereof, a rail connectsaid floats, a second rail positioned below the first-named rail and within its Vertical plane, a float arranged intermediate of said rail and adapted to serve as a housing for passengers, a superstructure positioned above said intermediate float and means affording access to said superstructure and said float.

4;. A boat comprising a horizontally disposed rail, a float arranged at each of the ends thereof, a second rail positioned below and within the vertical plane of the firstnamed rail and adapted to strengthen the same, a third float positioned intermediate of said first-named rail and adaptedto serve as a housing for passengers and acommunicating superstructure positioned above said last-named float.

In testimony whereof I aflix my signature.

MONROE GREEN. 

